31504125003421 has 32 divisors (see below), whose sum is σ = 38135328675840. Its totient is φ = 25450756583616.

The previous prime is 31504125003419. The next prime is 31504125003451. The reversal of 31504125003421 is 12430052140513.

It is not a de Polignac number, because 31504125003421 - 2¹ = 31504125003419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31504125003401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13468720 + ... + 15633766.

It is an arithmetic number, because the mean of its divisors is an integer number (1191729021120).

Almost surely, 2^{31504125003421} is an apocalyptic number.

It is an amenable number.

31504125003421 is a deficient number, since it is larger than the sum of its proper divisors (6631203672419).

31504125003421 is a wasteful number, since it uses less digits than its factorization.

31504125003421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166793.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 31504125003421 its reverse (12430052140513), we get a palindrome (43934177143934).

The spelling of 31504125003421 in words is "thirty-one trillion, five hundred four billion, one hundred twenty-five million, three thousand, four hundred twenty-one".